Morgans wrote:
shut off an engine when taxiing, then start it only when ready for
takeoff? Really?? That would shorten the life of the engine, wouldn't it,
with start cycles being part of overhaul criteria? Do they only do that for
long holds?

This one is new to me. I've never been on an airliner that did that, I
don't believe. If they did, I didn't notice it.

Any other airline pilots verify this?
--
Jim in NC

I believe that, rather than "shut off an engine for taxiing" they
simply delay starting one
(or more, as appropriate) until takeoff is iminent. That way there is
less time in service
and no more start cycles than would otherwise occur.

David Johnson